| Autor: |
Jian Yu, Jia Rrong Li, Shi Zhong liu, Mei Han, Ji Chun Xiong |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Materials Science Forum. 1072:79-86 |
| ISSN: |
1662-9752 |
| DOI: |
10.4028/p-199tfw |
| Popis: |
This work is concerned the tensile properties of the secondary Ni-based single-crystal superalloy DD6 near [001] orientation at 760°C. In this study, anisotropic tensile properties of DD6 alloy within 10° of the [001] orientation were exhibited at 760°C. The yield strength and ultimate tensile strength of DD6 alloy oriented close to [001] direction was the highest. As the deviation off the [001] orientation increased, both 0.2% yield strength and ultimate tensile strength was decreased. The specimens oriented close to [001]-[111] boundary exhibit higher yield strength and ultimate tensile strength than the specimens oriented close to [001]-[011] boundary. Numerous of dislocations can be found in the γ matrix channels during the tensile deformation. A number of dislocation pairs and few of stacking faults are found in the γ' precipitates after the tensile at 760°C. The morphology of γ' phases in DD6 alloy maintained cubical during the tensile deformation at 760°C. With Schmid's Law, the mechanism of anisotropic tensile properties in DD6 alloy near [001] orientation is analyzed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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